NEC 2000 IPS manual Wireless Roaming

Chapter 16 Wireless System

Wireless Roaming

The UNIVERGE NEAX 2000 IPS supports the JT-Q931a protocol and JT-11582 for signaling at Q-reference point between PBXs on the private network. By supporting this protocol, the PSs can be used in any Calling Area on the private network.

Roaming can be executed only on trunk connection between PBXs based on JT-Q931a protocol or IP. To each trunk route of JT-Q931a digital trunks/IP trunks, it can be specified whether Roaming is provided or not. The JT-Q931a digital trunks/IP trunks can be used by single line telephone stations and Dterm stations for originating or receiving calls as same as common trunks.

The Data Base Module (DBM) card (PN-AP00-B) is required per PBX. The DBM card cannot be used as billing application processor (for SMDR, MCI, PMS or Hotel printer). System data stored in the memory of the DBM card can be saved, loaded and verified from a MAT. A Roaming network can consist of maximum 512 PBXs. Visitor Location Register (VLR) information for maximum 512 Visitor PSs can be recorded to a system. VLR information is the various information of Visitor PS and is made in the memory of DBM on the Visitor PBX when the PS is roaming. When the VLR information exceeds for more than 512 PSs, DBM overwrites the oldest VLR information.

One of the following two Roaming service is available in the PBX.

Roaming service via D channel private line using Q931a digital trunks; Multi-Site Roaming Roaming service via IP network using Virtual IPT; Q931a Roaming over IP Trunk

The following sections describe the system outline and system configuration of Multi-Site Roaming/ Q931a Roaming over IP Trunk.

UNIVERGE NEAX 2000 IPS Request For Proposal (RFP) Reference Guide	Page 16-3
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